Machine for beading over sheet metal flanges



' Gd. 9, 1934. -soNNTAG 1,976,148

MACHINE FOR BEADING OVER SHEET METAL FLANGES Filed Dec. 6, 1932 2 Sheets-Sheet l Oct. 9, 1934. SQNNTAG 1,976,148

MACHINE FOR BEADING OVER SHEET METAL FLANGES Fi led Dec. 6. 1952 2 Sheets-Sheet 2 a p: I IIIIII/ IIIIIIIIIII.

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Patented Get. 9, 1934 UNHTED STATES PATENT OFFICE MAUHHNE FOR BEAIDKNG OVER SHEET METAL FLANGES Xaver Sonntag, Relate,

in Germany October 30, 193i) 19 Claims.

My invention relates to a machine for beading over the flanges of sheet metal, for instance the flanges formed by two bordered-up and folded edges of sheet-metal plates.

The new machine is particularly useful for, but its application is not limited to, the beadingcver of flanges on sheet-metal roofing.

It is an object of my invention to provide an improved machine of the kind referred to, and my improvements relate more particularly to the means for feeding the machine and to the tools on the machine by which the flange is beaded over.

To the end of eflecting the first-mentioned improvement, I provide, in combination with a frame supporting the heading tools, a lever which is operatively connected to the frame for feeding the frame along the flange.

Lever-operated feeding means of the kind described may also be adapted to folding and beading-over devices of other kinds, and in particular to the travelling machine described in my copending application for patent of the United States, Ser. No. 571,883, filed October 29, 1931, for Machine for connecting sheet-metal plates, in which the edge of a plate is bordered up in a helical guide way.

To the end of eflecting the last-mentioned improvement, I provide inclined tool-supporting means on the frame of the machine and springs: operatively connected to the supporting means so as to apply the tools to the flange under resilient pressure and to permit them to yield in horizontal and vertical direction. By these means I provide a machine whose manipulation is simple and is performed in any easy attitude of the operator, and which is adapted to be placed on, and to be removed from, the flange at any desired point by retracting and advancing the beading tools.

The feeding leveris equipped with mechanism for anchoring it to a fixed point, preferably to the flange to be beaded over. The machine is pulled toward the anchoring point, or pushed away from' it, by means of the feeding lever and is thus fed along the flange step by step.

Preferably, the anchoring means is designed as a clamping mechanism, and in a preferred embodiment of my invention it has a pair of jaws, with a spring for applying the jaws to the flange or other member to which the feeding means is anchored. The pressure exerted by the springs is so determined that the clamping mechanism is free to slide along the flange in one direction. Means are provided for setting it in the opposite (Ell. lil3-55) direction so that the feeding lever is anchored on the flange or the like, when the clamping mechanism is moved in this opposite direction, and released when the mechanism is moved again in the first direction.

The beading-over tools, as mentioned, are arranged in an inclined bracket and equipped with springs for applying them to the flange. Means are provided for displacing all tools collectively in the bracket, and for regulating the spring tension for each tool individually. By providing resilient means for applying the tools, and means for adjusting them, variations in the height and in the thickness of the flange are considered.

Preferably one of the beading means, for instance, the first pair of beading rolls, is inclined to the direction in which the machine is fed, 1. e. at an angle to vertical, so that the machine has a tendency to bear on the base it runs on, and will not be lifted from the base by the reaction of the tools. Preferably, the machine is equipped with a foot plate on its frame on which the operator places one of his feet, thus bringing a portion oi his weight to bear on the machine for holding it down in addition to the down-holding action of the inclined rolls.

In the drawings afflxed to this specification and forming part thereof a machine embodying my invention is illustrated diagrammatically by way of example.

In the drawings Fig. 1 is a plan view, and

Fig. 2 is an elevation of the machine,

Fig. 3 is a detail of the anchoring mechanism, viewed from below in Fig. 2, and

Figs. 4: to 7 are sections on the corresponding lines in Fig. 1.

Referring now to the drawings, the frame of the machine has two frame members 1 and 2 at opposite sides of two edges which are bordered up on two adjacent plates of sheet metal 20 and 21 and folded at the top, so that the two edges form together a flange 29 whose folded portion is beaded over by the machine, as will be described below. 7 and 8, Figs. 1 and 2, are transverse stays by which the two frame members 1 and 2 are connected across the flange 29, set screws 9-12 being provided in suitable eyes 4 to 6 of the frame members 1 and 2 for holding the members in the proper relative position on the stays. A truck is provided on the frame and equipped with four leading and two trailing wheels or rollers 19 by which the machine runs on the sheet-metal plates 20 and 21. The four leading wheels 19 are arranged in two groups, two wheels being allotted spectively. The two her 1. The level the frame member 1 and two to the frame member 2. The wheels of each group are supported in forks 13 which are connected to a central boss 18 at their inner ends. This boss is mounted to turn on the free portion of the stay 8 which extends between the eyes 4 and 6.in which the stay is held by the set screws 11 and 12, re-

wheels are mounted and on opposite ends of the stay '1. connecting the fork 14 to the correon the member 2, and 1'1 is a link connecting the forks 15 and 13 on the memat which the frame of the machine is disposed from the base its wheels run on, may be varied by rocking the forks 13, 14 and 15 about the respective stays 8 and '1. In the example illustrated, the forks are rocked by a handle 22 which is secured on the fork 13 supporting the leading wheels 19 on the frame member 2. 24 is a sector which is secured on the eye 6, -23 is a slot in the sector which is concentric to the axes of the stay 8, 25 is a pin which is mounted in the handle 22 and engages in the slot 23, 26 is a flange on the inner end of the pin, and 2'1 is a nut with a handle 28 on its outer threaded end.

in forks 14 16 is a link sponding fork 13 By turning the handle 22 into a predetermined position, for example into such a position that the forks 13, 14 and 15 are vertical, as shovm in dotand-dash lines in Fig. 2, the frame of the machine may be raised and lowered into any desired position, as required by the height of the flange 29. When the frame is raised as required, the members of the truck are held in position by setting the nut 2'1.

The means for feeding the frame along the flange will now he described. 69 is a feeding lever whose lower end is pivotaliy supported in a U- shaped casing as, as shown in Figs. 1, 2 and 3. The casing straddles the flange 29 and in turn is straddled by a fork 59 at the lower end of the feeding lever 60. 58 is a fork at the front end of a connecting rod 5'1, and 61 are pins by which the shanks of the fork 58 are connected to those of the fork 59 on the lever 60. is a T which is pivoted to the frame member 2 by a pivot 56 at the lower end of its vertical arm. The horizontal arm of the T has three holes. The hole at the centre receives a pin 54 by which the rear end of the connecting rod 5'1 is pivoted to the T 55. '17 is a locking pin which is inserted in one of the holes at the ends of the horizontal '1' arm 50 that the connecting rod 5'1 is rigidly connected to the T by the pins 54 and 1'1. '19 is a spring catch which secured to the T at one end and with its free end engages in a groove '18 of the pin '17 for holding it in position.

In the example illustrated the machine is pulled in the direction of the arrow 53, Fig. 1, by the feeding lever and the connecting rod 5'1. In this case the pin '17 is inserted in the hole at the front end of the T as shown in Fig. 2. when it is desired to push the machine the feeding lever 60 with the casing 64 is swung through 180 degs. about the pivot 54 and the pin '1'! is now inserted in the hole at the rear of the horizontal T arm. A spring catch such as '19 (not shown) may be provided in the vicinity of this hole for holding the pin '17. as described.

The clamping mechanism for anchoring the lower end of the feeding lever 60 to the flange 29 will now be described. 62, 63 are a pair of jaws which are mounted to slide on wedge faces at both sides of the casing 64, as shown in Fig. 3. The jaws are guided by lugs 65 which project inwardly from opposite sides of the side walls of the casing 64 and by slots 66 in the side walls of the casing 64 through which extend pins 68 in the lower ends of the fork 59 whoseheads 5'1 engage the outer faces of the fork members while their inner ends are secured to the jaws 62 and 63, respectively. The means for apply the jaws 62 and 63 to opposite sides of the flange 29 under a pressure which permits the casing 64 to slide on the flange 29, comprise a compression spring 69 which is abutted against a pin '11, Fig. 2, atone end, and against a spring plate '12, Fig. l, at its other end. The pin '11 connects projections '10 which extend vertically upward from the jaws 62 and 63. The spring plate '12 is arranged at the front end of a threaded spindle '13 which is mounted in a block '14. The pressure of the spring 69 which may be regulated by tuming the spindle 73, pushes the Jaws 62 and 63 in forward direction and applies them to opposite sides of the flange 29 at a predetermined and not excessive pressure.

For feeding the machine the lever 66 is moved in the direction of the arrow '15, Fig. 2. The lever at first turns about the pins 61 at the front end of connecting rod 5'1 because the resistance of the merzhine has not yet been overcome. The lower end of the lever, by means of the pins 66, pushes the jaws 62 and 63 in the same direction as the compression springs 69, and finally the jaws are applied to the flange 29 at a pressure which prevents sliding of the casing 64-011 the flange. The pins 68 are now held against movement so that the lever 66 is anchored and turns about the an of the pins 68, entraining the machine through the connecting rod 5'1. When the feeding stroke has been performed, the feedinglever 66 is turned in the direction of arrow '16, i. e. opposite the arrow 15. The jaws 62 and 63 are relieved of the pressure exerted on them by the feeding lever, the feeding lever again rocks about the pins 61 and the casing 64 toward the rear on the flange 29. The clamping mechanism, rests on the sheetmetal plates 29 and 21 under the action of its own weight and that of the comparatively heavy feeding lever 60, so that it will not rise but moves along the sides of the flange 29 in parallel to the sheet-metal plates. The jaws 62 and 63 are applied to the sides of the flange under the pressure transmitted by the compression spring 69. This pressure as mentioned, must be so determined that the movement of the jaws along the flange is not interfered with while, on the other hand, the mechanism is held to the sides of the flange, and guided positively by .it. The next feeding stroke is performed from the position to which the casing 64 has been moved during the preceding idle stroke, etc. In this manner the machine is moved along the flange 29 step by step. When the casing 64 has arrived at the end of the flange 29, the feeding direction must be reversed. This is effected, as mentioned, by turning the lever 60, the casing 64 and the connecting rod 57'about the pin 54 of the T 55 through 180 degs. after extracting the pin '17, and inserting it in the hole at the rear of the horizontal T arm. The feeding stroke is now performed by pushing the machine by means of the lever 60, instead of pulling it, until the beading over operation on the flange has been completed.

The jaws 62 and 63 of the clamping mechanism, by the pressure which they exert on opposite sides of the flange 29, apply the bordered up edges of the flange to each other during their movement from one anchoring position into the next anchoring position. In this manner bulges or other irregularities in the bordered-up edges which often occur, are smoothed down by the jaws. In order to obtain a uniform smoothing action, the jaws 62 and 63 should be made as long as the movement of the clamping mechanism from one position to the next.

It is important that the pulling or pushing forces exerted on the machine by the feeding means should attack the frame of the machine at as low a level as practicable in order to avoid forces which tend to tilt the frame, and this is why the vertical arm of the T has been fulcrumed at 56, just above the top plate of the frame member 2, as best seen in Figs. 4 and 5. Notwithstanding this low-level position of the pivot 56, the pins 61 of the feeding lever are at such a level above the sheet metal plates 20, 21 that a sufficiently long feeding stroke is obtained.

The frame member 2, as best seen in Figs. 4 to 7, is substantially a flat plate, with a downwardly extending bracing rib and serves as a foot plate for the operator, as mentioned. 30, Fig. 4, is a partly tapered and partly cylindrical beading roll at the leading end of the frame member 2, and 32 is a correspondingly shaped roll on the frame member 1 on which it is supported by means which will be described below. 31 is a parallel roll in the frame member 2 at the trailing end of the machine which cooperates with a parallel roll 33 on the frame member 1, Fig. 7. The frame member 8 is equipped with two intermediate rolls 39 and 40 but these rolls do not cooperate with rolls on the frame member 2 but with a curved cam 44, 45, Figs. 5 and 6. By providing a cam instead of rolls for cooperation with the two intermediate rolls 39 and 40, the design of the machine is simplified. Mating rollsfor' the intermediate rolls 39 and 40 might be provided but this would increase the initial cost of the machine.

Inclined arrangement of the axes of the rolls in the direction in which the machine is fed along the flange 29, has already been referred to. Some, or all, of the rolls may be arranged with their axes not quite vertical to the sheetmetal plates, so that the rolls themselves tend to pull the machine down against the reaction of the flange as it is beaded over at its folded edge.

-The inclination of the axes is particularly im portant for the trailing pair of parallel rolls 31, 33, and the axes of the rolls in this pair, while vertical in the direction at right angles to the direction in which the machine is fed along the flange 29, are preferably inclined at a more acute angle than the axis of the leading roll 30, or the axes of both rolls in the leading pair 30, 32 in the feeding direction. Any tendency to rising is counteracted not only by the downward pull of the inclined rolls but also by the operator putting his foot on the frame member 2. By suitably determining the angle at which the axes of the rolls are inclined in the feeding direction, it is possible to obtain so strong a pull that assistance on the part of the operator is not required for holding down the machine.

The rolls on the frame member 1 are mounted in an inclined U-shaped bracket 34 which is equipped with slide bars 35, Fig. 1, on the inner sides of its shanks.

36 and 37 are parallel bars which are mounted to slide on the slide bars 35 with their notched ends and are connected by stays 38. The bars 36 and 37, with the stays 38, make up a movable frame for supporting the rolls 32, 39, 40 and 33 of the frame member 1. Each roll is equipped with a rod 41 which is mounted to slide in the bars 36 and 37 and has a nut 50 at the end which projects beyond the upper bar 36. 48 is a spring which surrounds each rod 41 and is abutted against a washer 47 on a shoulder 46 on the rod 41 at its lower, and against a threaded sleeve 49 in the bar 36 at its upper end. The shafts of the several rolls might be integral with the rods 41 but in the example illustrated shafts 42 with threaded ends 43 areinserted in suitable bosses or extensions at the lower ends of the supporting rods 41. The axes of the rolls 32, 39 and 33 are vertical in the example illustrated but the axes of the rolls 31, 33,

32 and 39 might be slightly inclined, as and for the purpose specified. The axis of the shaft 42 of the roll 40 is horizontal.

The springs 48 might be abutted directly against the upper bar 36 of the tool-supporting frame but by providing the sleeves 49 the initial tension of the springs 48 is regulated individually. The initial position of the tools with respect to their mating parts, i. e. the rolls 30 and 31, and the cams 44, 45 on the frame member 2, is regulated individually by the nuts 50.

It will be understood that the initial tension of the springs 48 is also varied, not individually but collectively, if the tool-supporting frame 36, 37, 38 is moved toward, or away from, the flange 29. This movement also may serve for retracting the tools on the frame member 1 when it is desired to position the machine on the flange, or to remove it from the flange. To this end, I provide a threaded spindle 51 which is inserted in a threaded hole of the bracket 34 and equipped with a crank 52 at its outer end for rotating it. The inner end of the spindle 51 engages the upper bar 36 of the toolsupporting frame.

By providing the inclined tool-supporting means described, the rolls are free to yield resiliently and individually not only in horizontal but also in vertical direction. Yielding means for applying the rolls to the folded portion of the flange are desirable because thickened portions such as overlappings, binding rivets or the like, frequently occur on the flange and on its folded edge, and it would be difllcult to feed a machine with rigidly supported rolls against the excessive resistance of such obstructions.

The operation of beading over the folded edge is performed in four stages and in the example illustrated the tools in each stage bead the folded portions through an angle of 45 degs. from the preceding position, i. e. through an angle of 180 degs. from the initial vertical to the final vertical position of the folded edge. Obviously the operation may be performed in any other number of stages and the angle through which the folded edge is headed per stage, may be varied as desired.

The rolls of the first pair, Fig. 4, i. e., the rigidly supported roll 30 on the frame member 2, and the roll 32 which is yieldably supported on the frame member 1 by the means described, head the folded edge through an angle of 45 degs. from its initial vertical position on the flange 29 by their tapered portions. The next roll 39, Fig. 5, has a horizontal flat flange by which it applies the folded edge to the horizontal upper face of the cam 44 so that the edge is now at 90 degs. to its initial vertical position. The next roll 40, Fig. 6, rotates about a horizontal axis and has two stepped parallel portions and a tapered flange at the outer end of the parallel portion of smaller diameter. The flange forges the edge of the flange 29 down on a corresponding portion of addition to the movement permitted by its spring 48, is shiftably mounted on its shaft 42 so that its 5 resistance does not become excessive when it encounters thickened portions of the flange. In order to hold the roll 40 in a deflnite position, so that its tapered portion will not engage the wrong side of the flange 29, a spring whose wire may be of square section, is mounted on the shaft 42 which is abutted on the roll 40 at one end and on the boss at the lower end of its rod 41 at its other end. Thus, the spring 80 tends to force the roll away from the boss at the lower end of its rod 41 and yields when stacle. The rod 41 of the roll 40 might be inclined at a steeper angle than the rods of the other rolls, so that the vertical component of the spring action becomes greater. The beadingover operation is finished by the last pair of rolls 31 and 33, which, as shown in Fig. 7, are parallel and vertical, so that the edge is headed over through 180 degs. from its initial position, and is tightly applied to the side of the flange 29 by the spring 48 of its rod 31. The roll 33 might be equipped with a horizontal rod 41 and a spring on the rod. However, it is preferred to arrange the rods 41 of all rolls at the same inclination in the frame as the design of the machine is simplified, its initial cost is reduced, and its operation is facilitated.

As mentioned, the inclined arrangement of the rods 41 in whose bosses the shafts 42 of the rolls are secured, permits yielding of the rolls not only in horizontal, but also in vertical direction. The

freedom or" the rolls in vertical direction is important for these rolls which are equipped with portions exerting downwardly directed pressure on the folded edge as it is headed over, i.e. the rolls 32, 29 and so, because obviously the thickened portions or other irregularities are thicker in the folded portion of the flange than in its plain portion.

By arranging the mating rolls 30 and 31 for the rolls 32 and 33 at the leading and trailing ends of the machine in such manner that they cannot yield, a certain degree of one-sideness is broughtahout in their action on the edge of the flange if the edge presents the thickened portions aforesaid. If this occurs, the rolls 32 and 33 perform all the movement required but this is harmless because the one-sidedness of the finished flange is only local. Obviously the mating rolls 30 and 31 might be mounted resiliently by any suitable means (not shown) but as this would complicate the machine and eliminate a defect on the flange which does not require correction, the extra complication of resilient mounting may be dispensed with. I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described for obvious modifications will occur to a person skilled in the art.

In the claims affixed to this specification no selection of any particular modification of the invention is intended to the exclusion of other modiflcations thereof, and the right to subsequently make claim to any modification not covered by these claims is expressly reserved.

I claim:--

1. In a machine for beading-over flanges of sheet-metal plates in combination, a frame; beading tools on said frame, a lever operatively connected to said frame for feeding it along the flange, and means for anchoring said lever to a the roll encounters an ob point flxed with respect to the work operated upon.

2. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a feeding lever, means for anchoring said lever to a point fixed with respect to the work operated upon, and a connecting rod pivotally connected to said lever and i; said frame for feeding said frame along the nge.

3. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a lever operatively connected to said frame for feeding it along the, flange a supporting member-to which one end of said lever is fulcrumed, and means for anchoring said supporting member to a point flxed with respect to the work operated upon when said lever is moved in a given direction.

4. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a lever operatively connected to said frame for feeding it along the flange, a clamping mechanism to which one end of said lever is fulcrumed, and means for anchoring said clamping mechanism to a point fixed with respect to the work operated upon when said lever is moved in a given direction.

5. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, heading tools on said frame, a lever operatively connected to said frame for feeding it-along the flange and, a clamping mechanism to which one end of said 'iever is fulcrumed, said mechanism comprising a pair of jaws adapted to engage opposite sides of the flange, and means for applying said jaws to said flange when said lever is moved in a given direction.

6. In a machine for beading-over flanges of sheet-metal pistes in combination, a frame, beading tools on said frame, a lever operatively connected. to said frame for feeding it along the flange and, a clamping mechanism to which one end of said lever is fulcrumed, said mechanism comprising a pair of jaws adapted to engage opposite sides of the flange, and means for applying said Jaws to said flange when said lever is moved in a given direction and for disengaging said jaws from said flange when said lever is moved in the opposite direction.

'7. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beadingtools on said frame, a lever operatively connected to said frame for feeding it along the flange, a supporting member to which one end of said lever is fulcrumed, wedge faces on said supporting member at opposite sides of the flange, jaws adapted to cooperate with said wedge faces so as to engage opposite sides of the flange when said lever is moved in a given direction, and resilient means for permanently applying said jaws to opposite sides of the flange.

8. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a feeding lever, means for anchoring said lever to appoint fixed with respect'to the work operated upon, a connecting rod pivotally connected to said lever at one end, and a link fulcrumed to said frame at a low level at its lower end and connected to the other end of said connecting rod at its upper end, for feeding said frame along the flange.

9. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a feeding lever, means for anchoring said lever to a point fixed with respect to the work operated upon, a connecting rod pivotally connected to said lever at one end, and a T link fulcrumed to said frame at a low level at the lower end of its vertical arm and pivotally connected to said connecting rod at its horizontal arm, for feeding said frame along the flange.

10. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a feeding lever, means for anchoring said lever to a point fixed with respect to the work operated upon, a connecting rod pivotally connected to said lever at one end, and a T link fulcrumed to said frame at a low level at the lower end of its vertical arm and pivotally connected to said connecting rod at the centre of its horizontal arm, for feeding said frame along the flange.

11. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a feeding lever, means for anchoring said lever to a point fixed with respect to the work operated upon, a connecting rod pivotally connected to said lever at one end, a T link fulcrumed to said frame at a low level at the lower end of its vertical arm and pivotally connected to said connecting rod at the centre of its horizontal arm, for feeding said frame along the flange, and means for alternately securing said connecting rod to opposite ends of said horizontal arm.

12. In a machine for beading-over flanges of sheet-metal plates, a pair of frame membersarranged at opposite sides of the flange, stays connecting said members, wheel-supporting members mounted to rock about the axes of said stays, means for turning said wheel-supporting members about said axes, means for securing said wheel-supporting members in a definite position, beading tools on one of said frame members, a lever operatively connected to the frame constituted by said frame members for feeding the frame along the flange, and means for anchoring said lever to a point fixed with respect to the work operated upon.

13. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a support per tool which is inclined at an angle to said frame, resilient means operatively connected to each support for applying the corresponding tool to the flange, a lever operatively connected to said frame for feeding it along the flange, and means for anchoring said lever to a point fixed with respect to the work operated upon.

14. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a shaft per tool about which said tool is mounted to rotate, a rod .inclined at an angle to said shaft, resilient means operatively connected to each rod for applying the corresponding tool to the flange, a lever opoperated upon.

eratively connected to said frame for feeding it along the flange,- and means for anchoring said leverto a point, fixed with respect to the work 15. In a machinefor beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a bracket inclined at an angle to said frame, a support per tool mounted for reciprocation in said bracket, resilient means operatively connected to each support for applying the corresponding tool to the flange, a lever operatively connected to said frame for feeding it along the flange, and means for anchoring said lever to a point fixed with respect to the work operated upon.

16. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a bracket inclined at an angle to said frame, atool-supporting frame mounted to slide in said bracket, a support per tool mounted for reciprocation in said frame, re-

silient means operatively connected to each support for applying the corresponding tool to the flange, a lever operatively connected to said frame for feeding it along the flange, and means for anchoring said lever to a point fixed with respect to the work operated upon.

17. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a bracket inclined at an angle to said frame, a tool-supporting frame mounted to slide in said bracket, means for displacing said frame in said bracket, a support per tool mounted for reciprocation in said frame, resilient means operatively connected to each support for applying the corresponding tool to the flange, a lever operatively connected to said frame for feeding it along the flange, and means for anchoring said lever to a point fixed with respect to the work operated upon.

18. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a support per tool which is inclined at an angle to said frame, resilient means operatively connected to each support for. applying the corresponding tool to the flange,

means for varying the initial tension of said resilient means, a lever operatively connected to said frame for feeding it along the flange, and means for anchoring said lever to a fixed point.

19. In a machine for beading-over flanges of sheet-metal plates in combination, a frame, beading tools on said frame, a support per tool which is inclined at an angle to said frame, resilient means operatively connected to each support for applying the corresponding tool to the flange,

means operatively connected to each support for adjusting the initial position of the corresponding tool, a lever operatively connected to said frame for feeding it along the flange, and means for anchoring said lever to a point fixed with respect to the work operated upon.

XAVER SONNTAG. 

